I have been frustrated by failed attempts at homemade mayonnaise -- and this is the first recipe that has given me success. The gal who shared this recipe with me suggested using a light olive oil -- but I am committed to organic, extra virgin, first cold pressed. Costco carries a great product for a great price. Their Kirkland brand has loads of flavor. It is great for salads, cooking, or dipping bread. It also works with this mayonnaise recipe. The flavor is a bit intense -- but it works for our family (in a pinch).